What question did this study set out to answer?

To evaluate the technical feasibility and environmental impacts of decentralized green hydrogen production for blending into natural gas networks to supply residential heating in cold climates.

August 14, 2026The International Journal of Life Cycle AssessmentOpen Access

Comparative life cycle assessment of hydrogen–natural gas blending in residential heating networks for cold climate regions

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AVAlfonso González del ValleSapienza University of Rome ACAlessandro CaravelliSapienza University of Rome MRMarco RuggeriSapienza University of Rome

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Implication

Life cycle assessment reveals that blending up to 20% green hydrogen into natural gas reduces heating emissions by 54.9 kg CO₂ eq/MWh in cold climates, highlighting a viable path to decarbonization.

Key Points

To evaluate the technical feasibility and environmental impacts of decentralized green hydrogen production for blending into natural gas networks to supply residential heating in cold climates.
Developed a 1-year dynamic MATLAB/Simulink model simulating solar photovoltaic generation, proton exchange membrane electrolysis, water purification, compression, and seasonal hydrogen storage using thermal demand data from Ronzo-Chienis, Italy.
Performed an ISO 14040/44-compliant Life Cycle Assessment in SimaPro comparing 10% (S1) and 20% (S2) hydrogen volume blends against a 100% natural gas baseline.
Blending 10% and 20% hydrogen avoided 27.6 kg CO₂ eq/MWh and 54.9 kg CO₂ eq/MWh, respectively, compared to baseline natural gas.
The 20% blend scenario reduced impacts across 12 of 18 environmental categories by 2–20%, including stratospheric ozone depletion (−18%), land use (−18%), terrestrial acidification (−17%), and freshwater eutrophication (−14%).
Annual municipal emissions decreased by 440 to 875 t CO₂ eq, corresponding to a reduction of 435 to 865 kg CO₂ eq per capita.

Cite This Study

Valle et al. (2026) studied this question.

synapsesocial.com/papers/6a7ec735b70b84ec8b913628 https://doi.org/10.1007/s11367-026-02719-9

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Comparative life cycle assessment of hydrogen–natural gas blending in residential heating networks for cold climate regions

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Implication

Key Points

Cite This Study

Comparative life cycle assessment of hydrogen–natural gas blending in residential heating networks for cold climate regions

Discussion

Member takes

Implication

Key Points

Cite This Study

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